From: nobu.nokada@...
Date: 2004-06-10T20:16:17+09:00
Subject: Re: Signals and threads

Hi,

At Thu, 10 Jun 2004 16:37:02 +0900,
Gennady Bystritsky wrote in [ruby-talk:103056]:
> sigquit_handler = trap "SIGQUIT", "IGNORE"
> ... <the code spawning a process (with popen) where I want SIGQUIT 
> ignored>
> trap "SIGQUIT", sigquit_handler
> 
> I noticed that when the first trap returns nil, the second one does not 
> restore a signal handler to "DEFAULT", as I would expect. I have to do 
> something like that:
> 
> trap "SIGQUIT", (sigquit_handler or "DEFAULT")

Which version of ruby do you use?  It should return nil at the
first.

  $ ruby18 -v -e 'p trap("SIGQUIT", nil)'
  ruby 1.8.2 (2004-06-06) [i686-linux]
  "DEFAULT"

-- 
Nobu Nakada